Historical tsunamis · Oct 6, 1883, 7:04 PM UTC
1883 Cook Inlet, Ak tsunami
United States
The tsunami of Oct 6, 1883, 7:04 PM UTC originated near Cook Inlet, Ak (United States).
Key facts
- Date
- Oct 6, 1883, 7:04 PM UTC
- Cause
- Volcano and landslide
- Maximum documented water height
- 9.14 m
- Deaths
- 8
- Houses destroyed
- few (up to about 50)
- Damage
- limited (under US$ 1 million)
- Observation records
- 3
- Countries affected
- 1
Cause according to NOAA/NCEI: Volcano and landslide.
The highest documented water height was 9.14 m (Port Graham, English Harbor, Ak, United States).
3 observation sites in 1 countries are recorded.
The database records 8 deaths.
Houses destroyed: few (up to about 50).
Damage is estimated at limited (under US$ 1 million).
Map of observation sites
3Each dot is a documented observation site; colour and size show the observed water height. The triangle marks the source.
Tsunami arrival times
Documented arrival times from the NOAA/NCEI database, showing the earliest recorded location per country. Coverage is incomplete: a country without an entry was not necessarily spared.
- 0:00 hEarthquake (origin)
- 1:03 hUnited States · Port Graham, English Harbor, Ak · 9.14 m
2 places with a documented arrival time
Observations by country
| Country | Observation records | Maximum documented water height | Deaths | Earliest arrival |
|---|---|---|---|---|
| United States | 3 | 9.14 m Port Graham, English Harbor, Ak | — | 1:03 h |
Highest documented water heights
3 / 3Individual documented observations for this event. Heights come from different measurement types and sources; not every location has a measured height.
| Location / station | Observed height | Distance from source | Country |
|---|---|---|---|
| Port Graham, English Harbor, Ak · Ak | 9.14 m | 86 km | United States |
| Kodiak Island, Ak · Ak | 0.08 m | 193 km | United States |
| Augustine Island, Ak · Ak | — | 6 km | United States |
More tsunamis
Source: NOAA National Centers for Environmental Information (NCEI), Global Historical Tsunami Database. Confirmed events only. Deaths and damage are database estimates; older records are incomplete. Water heights come from different types of observation.